- New selective AT2 receptor ligands encompassing a gamma-turn mimetic replacing the amino acid residues 4-5 of angiotensin II act as agonists. Rosenström, U., Sköld, C., Plouffe, B., Beaudry, H., Lindeberg, G., Botros, M., Nyberg, F., Wolf, G., Karlén, A., Gallo-Payet, N., Hallberg, A. J. Med. Chem. (2005)